Monarch Magnetics

Monarch Magnetics

Operational geomagnetic intelligence.

Monarch Magnetics provides high-accuracy magnetic-field models, regional corrections, and time-varying information for directional drilling and other operations where magnetic-field accuracy matters.

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New release / November 1, 2026

HDGM2027 is available.

HDGM2027 introduces 10-arcminute global crustal-field resolution and location- and activity-dependent uncertainty for magnetic wellbore surveying. Established HDGM software and coefficient-file workflows continue under Monarch.

View HDGM2027 specifications and licensing

Products and solutions

Magnetic models and corrections.

HDGM2027 provides the global reference field. IFR1 adds regional crustal detail. Space Weather Correct (SWC) estimates changes in the magnetic field during operations.

Three co-registered magnetic declination surfaces over the Permian Basin labeled IGRF, HDGM, and IFR1, showing progressively finer spatial structure on a shared color scale.
A real SWC-CONUS declination correction time series over 24 hours, with an illustrative survey-time marker.
IFR1 correction at survey time IFR2
Permian Basin example. IGRF, HDGM and IFR1 show increasing detail in magnetic declination over the same area; SWC-CONUS adds the time-varying correction shown below.
Figure details and sources

Spatial comparison: 30 × 30 km region at 2.50 km MSL, epoch 2026.0, on a shared color scale. The SWC-CONUS trace shows 12 November 2025, with an illustrative survey-time marker. Magnetic data: USGS and other international geomagnetic sources.

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HDGM2027

Global magnetic reference

10-arcminute global crustal-field resolution with location- and activity-dependent uncertainty.

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2

IFR1

Regional crustal correction

Regional 3D corrections for crustal structure beyond the global reference, with depth-dependent uncertainty.

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3

Space Weather Correct

Time-varying correction (SWC)

Global and regional corrections for changing external fields. Regional SWC with compatible IFR1 supports an IFR2 reference.

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Uncertainty and validation Model uncertainty and comparisons with observations help assess each reference and correction.

Directional drilling

Magnetic referencing for wellbore positioning.

Reference-field uncertainty contributes to wellbore-positioning uncertainty. HDGM2027, IFR1 and SWC address complementary sources of magnetic error, helping drilling teams select an appropriate reference and correction strategy.

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Terrain-grounded Permian Basin IFR1 declination correction volume with an illustrative directional wellpath and growing position-uncertainty envelope.
Permian Basin example. Regional IFR1 declination correction and an illustrative well trajectory and position-uncertainty envelope. USGS magnetic data; satellite-derived terrain. Vertical scale exaggerated.

Validation

Tested against observations.

Independent measurements help verify model performance and characterize uncertainty.

Observed and SWC-CONUS-predicted magnetic declination disturbance during a geomagnetic storm, showing close agreement through the day.
SWC-CONUS, 12 November 2025. Observed and modeled declination changes at an independent station. Data: USGS geomagnetic observatories.

Other applications

Beyond directional drilling.

Magnetic navigation

High-resolution magnetic information for navigation and positioning applications.

Geomagnetic observation & monitoring

Measurements, observing systems, and related modeling for characterizing and monitoring Earth's magnetic field.

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Contact

Discuss your magnetic-reference requirements.

HDGM2027 licensing, regional IFR1 coverage, SWC, integrations, and specialized operational needs.

Contact Monarch contact@monarchmag.com